cpu_timer.cpp

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/*
SeComLib
Copyright 2012-2013 TU Delft, Information Security & Privacy Lab (http://isplab.tudelft.nl/)

Contributors:
Inald Lagendijk (R.L.Lagendijk@TUDelft.nl)
Mihai Todor (todormihai@gmail.com)
Thijs Veugen (P.J.M.Veugen@tudelft.nl)
Zekeriya Erkin (z.erkin@tudelft.nl)

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "cpu_timer.h"

namespace SeComLib {
namespace Utils {
    CpuTimer::CpuTimer () {
        this->timer.start();
    }

    void CpuTimer::Stop () {
        this->timer.stop();
    }

    void CpuTimer::Reset () {
        this->timer = boost::timer::cpu_timer();
    }

    CpuTimer::NanosecondType CpuTimer::GetDuration () const {
        return this->timer.elapsed().user;
    }

    std::string CpuTimer::ToString () const {
        return CpuTimer::ToString(this->GetDuration());
    }

    std::string CpuTimer::ToString (CpuTimer::NanosecondType userTime) {
        std::stringstream output;

        int_least64_t userTimeMilliseconds = static_cast<int_least64_t>(userTime / 1000000);

        int_least64_t miliseconds = userTimeMilliseconds % 1000;
        int_least64_t seconds = userTimeMilliseconds / 1000;
        int_least64_t hours = seconds / 3600;
        seconds = seconds % 3600;
        int_least64_t minutes = seconds / 60;
        seconds = seconds % 60;

        if (hours < 10) output << "0" << hours;
        else output << hours;
        output << ":";
        if (minutes < 10) output << "0" << minutes;
        else output << minutes;
        output << ":";
        if (seconds < 10) output << "0" << seconds;
        else output << seconds;
        output << ".";
        if (miliseconds < 10) output << "00" << miliseconds;
        else if (miliseconds < 100) output << "0" << miliseconds;
        else output << miliseconds;

        return output.str();
    }

}//namespace Utils
}//namespace SeComLib